SU876165A2 - Arrangement for automatic control of charging the multi-stage crushing production line - Google Patents

Description

The invention relates to techniques and means of controlling technological processes in the production of crushed stone and can be used in the crushing of ores, minerals and other bulk materials. 5

According to the main author. St. № 610 560 discloses an apparatus for automatically controlling the download of technological line multistage drobleyyya containing-graded sensors ¹⁰ proch- NOSTA, humidity and current performance computing units for crushing, screening, separating and suschilnogo conveyor comparison elements, logic elements are AND and OR, executive ^{15 is a} specific mechanism, a feedback block, and a setter for a loading block, and the output of the sensors of granular composition, strength, and one of the outputs of a humidity sensor is connected to the input of a computing unit of ²⁰ for other On the other hand, the output of the current performance sensor is connected to one of the inputs of the computing units for the screening and drying compartments and to the input of the computing unit of the conveyor, the other inputs of the computing units for the screening and drying compartments are connected to the other 5 outputs of the humidity sensor, the output of the computing blocks is connected to one of the inputs of the corresponding comparison blocks, one of the outputs of which is connected to the input of the AND element, 10 the other output is to the input of the OR element, the output of the AND and OR elements is connected to the corresponding input actuator is kinematically connected to the dial <? m and loading unit ¹⁵ com blo feedback, which is connected to the output ^{g of} the other input blocks .sravneniya £ 1].

A disadvantage of the known device ²⁰ is that it does not ensure the constancy of the grain composition of the finished product when the strength of the rock is changed and when the size of the crusher’s discharge gap increases with abrasive wear of the linings.

During the operation of the crusher, due to the abrasive wear of the linings, the size of the discharge gap continuously increases, which leads to the strengthening of crushed material and, in turn, negatively affects the production of the three-process line and the efficiency of the apparatus and devices following the cycle after the crushing process. To monitor changes in the physico-mechanical properties of rocks in the known device provides a strength sensor. However, in general, the device does not respond to ^{: a} change in the grain composition of the crushing product during the drift of the strength properties of the starting material.

The purpose of the invention is to increase the reliability of the device.

This goal is achieved by the fact that the device for automatically controlling the loading of the multi-stage crushing technological line is equipped with blocks of the current and set values, a regulator, an additional comparison element and a discharge gap sensor 'of the crusher, and the current and set value sensors are connected through the additional comparison element to the corresponding inputs a regulator, the output of which through the sensor of the magnitude of the discharge gap of the crusher is connected to the corresponding input of the computing unit for I'm crushing.

The drawing shows the proposed device containing sensors composition 1, strength 2, humidity 3, sensor 4 current performance, sensors of the current 5 and preset 6 values, computing units

7-10, comparing elements 11 -15, AND element 16, OR element 17, actuator 18, performance sensor 19, loading unit 20, feedback unit 21; the regulator 22 and the sensor 23 of the discharge gap.

The device operates as follows.

When changing the physical and mechanical properties, in particular, the strength of the mountain at times, the sensor 5 of the current value of the grain composition detects an increase or decrease in the weighted average diameter of the crushed material, signals c. which are received on the element 15 of comparison with a given value. If the current value of the weighted average diameter is less than the specified value, then a signal ₅ appears on one output, which activates the regulator 12 of the crusher discharge gap, which increases it until the value of the weighted average diameter of the material becomes normal.

If the current value of the weighted average diameter of the material is greater than the specified value, a signal appears to reduce the size of the discharge gap. If during operation, due to the abrasive wear of the linings, the size of the discharge gap increases and the weighted average diameter of the crushed material increases beyond the permissible value, the device also generates a signal and activates a system that reduces the size of the discharge gap.

Due to the connection between the sensor 23 measuring the discharge gap and the crusher computing unit, the device provides the output of the crushing and sorting line according to the initial power supply in accordance with the varying throughput of the crusher and the actual throughput of the equipment following the crusher in the technological cycle.

Claims (1)

3 pa crusher discharge gap for abrasive wear of linings. During the operation of the crusher due to abrasive wear of the linings, the size of the discharge gap continuously increases. This leads to the strengthening of the crushed material and, in turn,; It reflects negatively on the production output of the processing line and on the efficiency of the apparatus and devices that follow a cycle after the crushing process. To monitor the change in the physicomechanical properties of rocks, a strength sensor is provided in the known device. However, in general, the device does not react to changes in the grain composition of the crushing product when the strength properties of the starting material drift. The purpose of the invention is to improve the reliability of the device. This goal is achieved by the fact that the device for automatic control of the loading of a multi-stage crushing process line is equipped with current and setpoint blocks with a controller, an additional comparison element and a crusher discharge gap value sensor, the current and setpoint sensors being connected via an additional comparison element to the corresponding regulation inputs. torus, the output of which through the sensor size of the discharge gap of the crusher is connected to the corresponding input of the computing unit l crushing. The drawing shows the proposed device comprising sensors of granule composition 1, strength 2, humidity 3, sensor 4 of current capacity, sensors of current 5 and given 6 values, computing blocks 7-10, elements 11-15 comparison, element AND 16, element OR 17, an actuator 18, a performance backlight 19, a loading unit 20, a feedback unit 21, a controller 22 and a discharge gap value sensor 23. The device works as follows. When the physical and mechanical properties are changed, in particular, the strength of rock particles, the sensor 5 of the current value of the grain composition records an increase or decrease in the weighted average diameter of the crushed material, signals with. which arrive at elect5 -4 ment 15 comparison with a given value. If the current value of the weighted average diameter is less than the specified value, then a signal appears at one output that triggers the crusher’s discharge adjuster 12, which increases it until the weighted average diameter of the material returns to normal. If the current value of the weighted average diameter of the material is greater than the specified value, then a signal appears to reduce the size of the discharge gap. In the event that the size of the discharge gap increases during the operation due to abrasive wear of the linings, and the weighted average diameter of the crushed material increases above the allowable value, the device also generates a signal and activates a system that reduces the size of the discharge gap. Due to the presence of a connection between the sensor 23, which measures the size of the discharge gap, and the processing unit 7 of the crusher, the device provides the performance of the crushing and screening line on the initial power supply in accordance with the varying capacity of the crusher and the actual capacity of the equipment following the process cycle of the crusher. The invention The device dp automatic control of the loading of the technological line of multi-stage crushing, according to the author. St. No. 610560, characterized in that, in order to increase the reliability of the device, it is provided with blocks of the current and setpoint, a controller, an additional comparison element AND a sensor for the size of the discharge gap of the crusher, the sensors of the current and specified value being connected via an additional comparison element to the corresponding the inputs of the regulator, the output of which through the sensor of the value of the discharge gap of the crusher is connected to the corresponding input of the computing unit for crushing. Sources of information taken into account in the examination 1, USSR Copyright Certificate 610560, cl. -B 02 C 25/00, 1976.